Help?!

So my period 15 days late. My bf (now ex 🤭) and I had really quick sex. Before that I gave him head and he wiped the cum off good.And about 10 min later we did it. I tbh didn’t feel him cum in me I was just wet .we barely did it for 5 min.But since we broke up we not on good terms and he been lying about saying he cummed, then he didn’t, saying he shoot blanks, then he don’t. Idk what to beleive. My periods never been late before and Rn I’m having cramps, tender breasts and I’m kind of bloated sometimes .Please tell me if you think I’m preggo but lemme say it’s not that easy to get a preggo test😭 btw I’m 16 and is it normal for a period to be late like this and not be preggo